JP4298377B2 - Disposable pants-type wearing articles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disposable pant-type wearing article that can be used as a disposable pant-type diaper, a disposable pant for incontinence patients, a disposable training pant, and the like.
[0002]
[Prior art]
Japanese Patent Laid-Open No. 9-173381 (Patent Document 1) discloses an invention aimed at fitting a crotch region of a worn article such as a disposable diaper to a crotch part of a wearer of the article. The diaper according to the present invention includes a first absorbent body in which the absorbent body is disposed in a central region in the longitudinal direction of the diaper, and a pair of second absorbent bodies that are on both sides of the crotch region and are separated from the first absorbent body. Become. Solid gathers are formed on both sides of the second absorbent body in the longitudinal direction opposite to the first absorbent body. The cross-sectional shape of the crotch region when the diaper is in a worn state is as shown in FIG. 10 (FIG. 4 in Patent Document 1). The diaper of FIG. 10 includes a first absorber 104, a second absorber 105, and a three-dimensional gather 106, and the second absorber 105 is located on the side of the first absorber 104 as the three-dimensional gather 106 rises. As a result, the first absorbent body 104, the second absorbent body 105, and the three-dimensional gather 106 cooperate to form a concave portion 107 that swells downward in the crotch region. The recess 107 can be used as a space for temporarily storing the urine until the urine is absorbed by the absorber.
[0003]
The absorbent garment disclosed in Japanese Patent No. 2554818 (Patent Document 2) is also intended to improve the fit of the garment wearer to the crotch. This garment has an absorbent body and fastening means. A cutout portion having an opening is formed at both edges in the width direction of the absorbent body, and an elastic member is disposed in the vicinity of the cutout portion. Yes. Due to the contracting action of the elastic member, the absorbent body can be fitted around the legs of the diaper wearer while deforming so as to close the opening of the notch, and at the same time forming a recess in the crotch region that bulges downward. Is possible.
[0004]
[Patent Document 1]
JP-A-9-173381
[Patent Document 2]
Japanese Patent No. 2554818
[0005]
[Problems to be solved by the invention]
In the diaper of Patent Document 1, the absorbent body is divided into the first absorbent body 104 and the second absorbent body 105, so that the side edges of the absorbent body in the crotch region, that is, the width direction of the second absorbent body 105. Deformation to becomes easy. However, since the absorbent body is deformed while being compressed in the longitudinal direction, which is the front-rear direction so as to form an arc simultaneously with the deformation, the absorbent body when the article is worn has several large wrinkles in the front-rear direction. The absorbent body is bulky in the crotch region, and the bulkiness hinders the movement of the legs, and the appearance of the worn article becomes unpleasant. Moreover, the open-type diaper illustrated in this document, when wearing it, first, the waist area and the leg area are brought into close contact with the wearer to determine the position of the diaper relative to the wearer's body, Next, the front waist area and the rear waist area are connected using fastening tape. In a diaper worn in this way, the crotch region often deforms into an inverted V shape along the wearer's crotch, and such a crotch region is not picked and pulled downward, as shown in FIG. The appearing recess 107 is not formed. Further, the first absorber 104 and the second absorber 105 of this document are sandwiched between a liquid permeable top sheet 101 and a liquid impermeable back sheet 102, and the first absorber 104 and the second absorber 105 are Where the absorber 105 is separated, the sheets 101 and 102 are overlapped and integrated. However, when these two sheets 101 and 102 are to be integrated by adhesion or welding, if the pulp particles and superabsorbent polymer particles contained in the absorber are present between both sheets 101 and 102, these particles This prevents the sheets 101 and 102 from coming into contact with each other and prevents the sheets 101 and 102 from being successfully integrated. In an absorbent body in which the sheets 101 and 102 are not integrated in the vicinity of the first absorbent body 104 and the second absorbent body 105, the first absorbent body 104 and the second absorbent body 105, particularly the second absorbent body 105 having a small shape are formed. It becomes easy to shift from a predetermined position.
[0006]
The garment of Patent Document 2 is also of an open type, and if it is worn like the diaper of Patent Document 1 and is not pulled down by pulling the crotch region so that it hangs down, the absorber closes the opening of the notch. Thus, it is difficult to deform, and it is also difficult to form a recess in the crotch region.
[0007]
The present invention relates to improvements of these prior arts, and in a disposable wearing article, the body fluid-absorbing core material does not cause a large wrinkle that deteriorates the wearing feeling of the wearing article, and the front and rear waists around the crotch region An object is to quickly form a concave portion that curves downward toward the region and bulges downward toward the crotch region when curved.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention is directed to a longitudinal and lateral center line, including a front waistline region, a back waistline region, and a crotch region, and the front and back waists centered on the crotch region. A disposable pants-type wearing article having a body fluid absorbing portion extending toward a surrounding region, the body fluid absorbing portion having a length direction toward the front and rear waist region and a width direction intersecting the length direction.
[0009]
In this disposable pants-type wearing article, the present invention is characterized as follows. The bodily fluid absorption part includes a bodily fluid-absorbing core material having an inner surface located on the skin side of the article wearer and an outer surface on the opposite side, and a liquid-permeable sheet that covers the inner surface and contacts the skin. The core material includes a first portion in which the portion located in the crotch region is located in the center in the width direction. Core material And the first Core material A pair of second located on each side of the Core material And the second Core material Is , It has a front end portion, a rear end portion, and an intermediate portion located between these both end portions, and the front and rear end portions are Outer edge Through the slit-like gap extending diagonally and extending toward the lateral center line. Core material The intermediate portion is separated from the gap at the front and rear end portions. Inner edge Between the first Core material A continuous V is formed in the intermediate part, and a laterally V-shaped notch that expands outward in the width direction is formed in the intermediate part.
The bodily fluid absorbing portion includes a first crotch elastic member extending in the lengthwise direction, and the first crotch elastic member is the second crotch elastic member. Core material A second crotch elastic member positioned below the outer edge of the first crotch portion and straddling the notch, extending outward in the width direction of the first crotch elastic member and extending in the length direction; A third crotch elastic member positioned outward in the width direction of the second crotch elastic member and extending in the lengthwise direction, and the second and third crotch elastic members, The second Core material The rear end portion and the intermediate portion are disposed outside the outer edge portion.
[0010]
In a preferred embodiment of the present invention, the inner and outer surfaces of the core material are covered with a liquid absorption diffusion sheet, and the liquid absorption diffusion sheets covering the inner and outer surfaces in the slit-like gap are in a non-bonded state. In still another embodiment, the disposable pants-type wearing article further includes a covering portion that is resistant to permeation of bodily fluids, and the bodily fluid absorbing portion is located around the crotch region around the front and rear waists. It extends to the area and is arranged on the covering part. Moreover, the said coating | coated part may be formed cyclically | annularly.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Taking a pants-type diaper as an example of a disposable pants-type wearing article according to the present invention, the details of the present invention will be described with reference to the accompanying drawings.
[0012]
FIG. 1 is a partially broken perspective view of a disposable pant-type diaper 1. The diaper 1 has a pants-type and preferably has a covering part 2 having resistance to permeation of body fluids and a body fluid absorbing part 3 for absorbing and holding body fluids. Resistance here means that there is no permeation of bodily fluids when using diapers, or permeation of bodily fluids to the extent that there is no substantial hindrance when using diapers. The covering portion 2 is formed by superposing an inner surface sheet 2a and an outer surface sheet 2b having substantially the same shape and the same size and joining each other, and includes a front waist region 6, a rear waist region 7, and a crotch region 8 And have. The front and rear waist regions 6 and 7 overlap each other at the side edges 12 and 13 and are joined at a plurality of portions 4 that are intermittently arranged in the vertical direction. The diaper 1 is formed with a waist opening 9 and a pair of leg openings 11. At the periphery of the waist opening 9, a plurality of first waist elastic members 14 are located between the inner and outer sheets 2a and 2b and joined to at least one inner surface of these sheets 2a and 2b in an expanded state. At the peripheral edge portion of the pair of leg-hole openings 11, the opening 11 crosses the crotch region 8 approximately on the front side of the one leg-hole opening 11, and the opening 11 approximately half-turns on the front side of the other leg-hole opening 11. The plurality of first leg-around elastic members 16a and the opening 11 on the rear side of one leg-around opening 11 cross about the crotch region 8 and the opening 11 on the rear side of the other leg-around opening 11. A plurality of second leg-around elastic members 16b that circulate approximately half are between the inner and outer surface sheets 2a and 2b, and are joined to at least one inner surface of these sheets 2a and 2b. In the first leg elastic member 16a and the second leg elastic member 16b, at least a part of the entire length of the first leg elastic member 16b that makes a half circumference of the leg peripheral opening 11 is in an extended state. There are a case where they cross each other and a case where they cross the crotch region 8 in parallel without approaching each other. In each of the front and rear waist regions 6 and 7, the first waist elastic member 14 and the first and second leg elastic members 16a and 16b are spaced apart from each other in the vertical direction in FIG. A plurality of second waistline elastic members 17 extending in parallel are provided. The second waistline elastic member 17 extends along the inner surface of the outer surface sheet 2b, and is located between the inner and outer surface sheets 2a and 2b in the vicinity of the side edge portions 12 and 13, and the inner surface of at least one of these sheets 2a and 2b. It is joined in the stretched state.
[0013]
FIG. 2 is a partially broken plane of the diaper 1 of FIG. 1 peeled off at the joining portion 4 and the front and rear waist regions 6, 7 extending in the directions of arrows P and Q shown in FIG. FIG. The covering portion 2 has an hourglass shape, and the overlapping inner sheet 2a and outer sheet 2b are joined to each other via a hot melt adhesive (not shown) intermittently applied to one of these sheets 2a, 2b. ing. The width of the covering portion 2 is bisected by the vertical center line AA, and the length is bisected by the horizontal center line BB. The longitudinal center line AA extends in the direction of the front and rear waist regions 6 and 7 through the crotch region 8 in the diaper 1 of FIG. The absorbent portion 3 has a rectangular shape that extends long in the direction of the front and rear waist regions 6 and 7 with the crotch region 8 of the covering portion 2 as the center, and the longitudinal direction along the longitudinal center line AA and the lateral center line B. -B along the width direction, and the width is bisected by the longitudinal center line AA. Barrier cuffs 21 that can elastically extend and contract in the front-rear direction of the covering portion 2 are formed at both side edge portions of the absorbing portion 3. The first waistline elastic member 14 of the covering portion 2 extends in the waistline direction (lateral direction in the figure) without intersecting the absorption portion 3, and the second waistline elastic member 17 intersects the absorption portion 3. Extending around the trunk. The elastic members 16a and 16b around the first and second legs cross the absorbent portion 3 in the crotch region 8 (see also FIG. 3). The absorption part 3 has its widthwise center part and both end edges in the lengthwise direction joined to the covering part 2 via a hot melt adhesive 62, and the application area of the adhesive 62 is indicated by a broken line in the figure. (See also FIGS. 5, 6 and 7). Such a diaper 1 of FIG. 2 is made substantially symmetrical with respect to the longitudinal center line AA.
[0014]
FIG. 3 is a plan view of the covering portion 2 shown in FIG. In FIG. 3, the first and second waistline elastic members 14 and 17 and the first and second leg elastic members 16a and 16b between the inner surface sheet 2a and the outer surface sheet 2b are indicated by chain lines, and the absorbing portion The position of 3 is indicated by a virtual line.
[0015]
FIG. 4 is a partially broken plan view of the absorbing portion 3 shown in FIG. 2, and the covering portion 2 is indicated by an imaginary line. The absorbent portion 3 is formed of a liquid-permeable top sheet 31, a liquid-impermeable back sheet 32, and a body fluid-absorbing core material 33 interposed between both the sheets 31 and 32. The entire core material 33 is covered with a liquid-absorbing diffusion sheet 70 having body fluid absorbability and body fluid diffusibility such as tissue paper (see also FIGS. 5 and 6), and the longitudinal center line A -A central portion that extends on the A and extends from the crotch region 8 toward the front waistline region 6 and the back waistline region 7 so that the width in the waistline direction increases. Core material 36 (first Core material In the crotch region 8 including a portion where the vertical center line AA and the horizontal center line BB intersect Core material A pair of sides located on each side of 36 Core material 37 (second Core material ). Center Core material 36 and side Core material 37 is both Core material A pair of gaps formed between 36 and 37, that is, a pair of front slits 38 and a pair of rear slits 39, are separated from each other. Front and rear slits 38, 39 are side Core material The outer edge portion 42 extending in the length direction 37 obliquely intersects the lateral center line BB side. In the continuous portion 40 between the inner end portions 38a, 39a of these slits 38, 39, the central portion Core material 36 and side Core material 37 is connected. side Core material 37 has a central portion through slits 38 and 39. Core material 36 in the crotch region 8 near the front waistline region 6 in the lateral direction V in the figure. The inner edge portion 41 faces the inner edge portion 41, the outer edge portion 42 that extends in the length direction and forms the outermost part of the core member 33, It has a notch 43 that extends from the outer edge 42 to the longitudinal center line AA while drawing a letter shape. The inner edge 41 and the outer edge 42 cross each other and are side portions. Core material 37, a front end portion 37a and a rear end portion 37b are formed. An intermediate portion 37c is located between the both end portions 37a and 37b, and the intermediate portion 37c forms a continuous portion 40. The slits 38 and 39 of the preferable core member 33 have a length L parallel to the longitudinal center line AA. ₁ , L ₂ Is in the range of 10 to 200 mm, the width is in the range of 3 to 15 mm, and the distance between the inner end portions 38a and 39a, that is, the distance between the inner end portions 38a and 39a in the continuous portion 40 is 10 to 300 mm. It is in the range. The absorbent part 3 including such a core material 33 is also a side part. Core material A crotch elastic member 46 extending in the lengthwise direction along the outer edge 42 is provided in the vicinity of the outer edge 42 of 37. A preferable crotch elastic member 46 is composed of a plurality of, for example, first to fourth crotch elastic members 46 a to 46 d, and at least one elastic member 46, for example, the first crotch elastic member 46 a is notched 43. Is straddling as shown in the figure. Details of the crotch elastic members 46a to 46d are shown in FIGS.
[0016]
FIG. 5 is a diagram illustrating a cut surface taken along the line VV of FIG. 4, and a part of the covering portion 2 is indicated by an imaginary line. Top sheet 31 is in the center Core material 36 and a pair of sides Core material 37, covering the upper surface of the core material 33 and extending laterally from the core material 33, both side edges 31a are folded inward and joined to each other via a hot melt adhesive (not shown). . The back sheet 32 is a central portion of the core material 33. Core material 36 lower surface and each side Core material First back sheet 32a covering a portion of the lower surface of 37, and each side portion Core material A second back sheet 32b that covers a part of the lower surface of the outer cover 37 and extends laterally from the outer edge 42, and the outer edge 48 of the second back sheet 32b is folded inward to form a part of the barrier cuff 21. ing. A cover sheet 49 made of a nonwoven fabric is joined to the lower surface of the second back sheet 32b. The cover sheet 49 is folded inward at the top 51 of the barrier cuff 21 and extends to the base end 52 of the barrier cuff 21, thereby forming the inner and outer surfaces of the barrier cuff 21. The barrier cuff 21 has elastic members 54 and 56 extending in the lengthwise direction in FIG. 4 in the inside of the top portion 51 and the inside of the intermediate portion 53 between the top portion 51 and the base end portion 52. The members 54 and 56 are intermittently joined to the inner surface of the cover sheet 49 in the length direction via a hot melt adhesive (not shown). side Core material 37, the crotch elastic member 46 is interposed between the second back sheet 32b and the cover sheet 49 in the vicinity of the outer edge 42. Of the crotch elastic member 46, the first and second crotch elastic members 46a, 46b Core material 37 and extends parallel to the longitudinal center line AA (see FIG. 4). The third crotch elastic member 46c Core material 37 and the base end portion 52 of the barrier cuff 21 and extends parallel to the longitudinal center line AA. The fourth crotch elastic member 46d is in the vicinity of the base end portion 52 of each barrier cuff 21 and extends parallel to the longitudinal center line AA.
[0017]
The barrier cuff 21 is formed by a second back sheet 32b and a cover sheet 49 covering both surfaces thereof from the base end part 52 to the intermediate part 53. The second back sheet 32b makes the barrier cuff 21 impermeable, and the cover sheet 49 covers the second back sheet 32b to make the barrier cuff 21 feel good. Between the intermediate part 53 and the top part 51 of the barrier cuff 21, it is formed only with the cover sheet 49 so that the touch becomes particularly flexible, and the second back sheet 32b is not used. The elastic member 56 located at the intermediate portion 53 is closer to the longitudinal center line AA than the elastic member 54 located at the top portion 51. Since both elastic members 54 and 56 are joined to the cover sheet 49 in an extended state, when they contract, the barrier cuff 21 rises as shown in the figure. The height at which the barrier cuff 21 rises is determined by the amount of contraction of both elastic members 54, 56. A horizontal V-shape that expands toward the outer side in the width direction of the absorbing portion 3 is drawn. At the base end portion 52 of the barrier cuff 21, the cover sheet 49 is bonded to each side edge portion 31 a of the top sheet 31 through the adhesive 61. The absorbent portion 3 in FIG. 5 is joined to the inner surface sheet 2a of the covering portion 2 via the adhesive 62 applied to the first back sheet 32a and / or the second back sheet 32b. The preferred absorbent portion 3 is joined to the inner sheet 2a between the first crotch elastic members 46a so as not to prevent the expansion and contraction of the crotch elastic members 46.
[0018]
FIG. 6 is a view showing a section taken along line VI-VI in FIG. In this figure, the center Core material 36 spreads over the entire width of the absorber 3 and its central part Core material The barrier cuff 21 rises from the side edge portion of 36.
[0019]
FIG. 7 is a view showing a section taken along line VII-VII in FIG. The line VII-VII crosses the front end edge 3a (see FIG. 4) of the absorber 3. The front end edge 3 a does not include the core material 33, and the top sheet 31 and the back sheet 32 are overlapped and bonded via the adhesive 63. Further, the barrier cuff 21 at the front edge portion 3 a is folded, and the cover sheets 49 and the cover sheet 49 and the top sheet 31 are joined to each other through the adhesive 64. Moreover, the absorption part 3 is joined to the inner surface sheet 2 a through the adhesive 62 in the entire width direction. The rear end edge part 3b of the absorption part 3 also has the same cut surface as the front end edge part 3a.
[0020]
In the pants-type diaper 1 of FIG. 1 formed in this way, the absorption portion 3 is bent so as to form a U-shape and is absorbed when extending toward the front and rear waist regions 6 and 7 around the crotch region 8. The crotch elastic member 46 in the portion 3 and the elastic members 54 and 56 of the barrier cuff 21 contract. side Core material 37 is deformed so that the width of the notch 43 defining the lateral V shape in FIG. 4 is narrowed by the contraction of the crotch elastic member 46, and at the same time, the inner end portions 38a and 39a of the slits 38 and 39 are also deformed. The outer edge 42 rises toward the diaper wearer's buttocks. The outer edge 42 is deformed so as to be bent along the line on the continuous portion 40 and the pair of front and rear slits 38 and 39. side Core material 37, a front end portion 37a and a rear end portion 37b are arranged at the center portion through slits 38 and 39. Core material Because it is separated from 36, Core material The width of the notch 43 can be reduced without being constrained by 36 and the lengthwise dimension along the longitudinal center line AA can be reduced, and at the same time, it can easily stand up above the diaper 1. . side Core material When 37 reduces the width of the cutout portion 43, the topsheet 31 and the backsheet 32 are wrinkled at the cutout portion 43, but the side portion Core material 37 itself does not wrinkle or is slight even if it occurs. Core material The wrinkles 37 are bulky and the fit of the absorbent portion 3 to the wearer and the feeling of wearing are not deteriorated. side Core material 37, the width of the notch 43 can be reliably narrowed by at least one first crotch elastic member 46a straddling the notch 43.
[0021]
FIG. 8 is a view showing the main part of the longitudinal cut surface along the line VIII-VIII in FIG. 1, and both legs 80 of the wearer of the diaper 1 are shown in phantom lines. The line VIII-VIII is a line that coincides with the horizontal center line BB in FIG. As the diaper 1 is pulled up along both legs 80 that have passed through the leg opening 11, the barrier cuff 21 in the crotch region 8 comes into contact with both legs 80 from the inside, and the absorbing portion 3 is a side portion. Core material While 37 stands up, the center Core material 36 will hang down. The diaper 1 that has been raised further Core material When the outer edge portions 42 of the respective 37 abut against the flange portion 81 from below, the operation stops. The diaper 1 at this time is the side Core material 37 is a body fluid-absorbing leak-proof wall that prevents body fluid from leaking to the side. Core material A pocket-shaped recess 82 is formed in the crotch region 8 where 36 is a bottom portion that absorbs body fluid. That is, in this diaper 1, the central part Core material 36 and side Core material When the absorbent part 3 consisting of 37 is applied to the pant-type diaper 1, when the diaper 1 is worn, the recesses 82 are automatically formed without causing large wrinkles in the core material 33. When the diaper 1 is for adults, the recess 82 serves as a space for temporarily storing a large amount of urine excreted at a time until the core material 33 absorbs the urine. Useful. Central part as shown Core material 36 and side Core material 37 is connected to the central part 40 by the continuous part 40 Core material 36 side fluid absorbed by Core material 37 can be diffused. Central part Core material 36 and side Core material 37 is connected to the central part between the stage of manufacturing the diaper 1 and the stage of use. Core material Side to 36 Core material The position of 37 can be kept constant. Center Core material 36 and side Core material It is possible to produce a diaper with the 37 completely disconnected, Core material Since 37 is relatively small, it is Core material When separated from 36, it is easy to move and it is difficult to keep the entire shape of the core material 33 constant. Central part like the diaper 1 according to the present invention Core material 36 and side Core material If the absorbing portion 3 is partially connected to 37, it is not necessary to positively join the top sheet 31 and the back sheet 32 at the slits 38 and 39. Further, even when the inner and outer surfaces of the core material 33 are covered with the liquid absorption diffusion sheet 70, it is not necessary to actively join the liquid absorption diffusion sheets 70 on both surfaces at the slits 38 and 39. The positional relationship among the slits 38, 39, the top sheet 31, and the back sheet 32 is illustrated in FIG.
[0022]
FIG. 9 is a drawing similar to FIG. 1 showing an example of the embodiment. The covering portion 2 of the illustrated diaper 1 is an annular shape composed of a front waistline region 6 and a back waistline region 7, and includes a first waistline elastic member 14 and a second waistline elastic member 17, Lacks inseam area. The crotch region 8 of the diaper 1 is formed only by the body fluid absorbing part 3. The body fluid absorbing portion 3 extends from the crotch region 8 to the front and rear waist regions 6 and 7 of the covering portion 2 and is arranged inside the covering portion 2, and these both portions 2 and 3 are shown in FIGS. Are joined in the same manner as shown in FIG.
[0023]
In the diaper 1 according to the present invention, the cut-out portion 43 of the absorbent portion 3 is a side portion. Core material At least one is formed at an appropriate portion of the outer edge portion 42 of 37. Center Core material 36 can appropriately change the length direction and width direction dimensions of the front waistline region 6 and the back waistline region 7 in the illustrated example. For the top sheet 31, a liquid-permeable non-woven fabric or a liquid-permeable, apertured plastic film can be used. For the back sheet 32, a liquid-impervious plastic film or a liquid-impervious nonwoven fabric can be used. For the cover sheet 49 covering the back sheet 32, a breathable nonwoven fabric, a breathable water-repellent nonwoven fabric, a liquid-impervious nonwoven fabric, or the like can be used. As the core material 33, pulverized pulp or a mixture of pulverized pulp and superabsorbent polymer particles can be used. Since the coating | coated part 2 is for making the absorption part 3 contact | abut to a diaper wearer's skin, the shape and structure are not restricted to the thing of an illustration example, A design can be changed suitably. For example, in FIG. 1, instead of the first and second leg-hole elastic members 16 a and 16 b, a continuous elastic member that makes a round of the opening 11 can be used at the periphery of each leg-hole opening 11. A nonwoven fabric, a woven fabric, a plastic film, etc. can be used for the inner surface sheet 2a and the outer surface sheet 2b of the covering portion 2. For the crotch elastic member 46 and other elastic members, various elastomers having a thread shape or a belt shape can be used. The members of the diaper 1 can be joined together by adhesion or welding.
[0024]
The present invention described taking the disposable pants-type diaper 1 as an example can be implemented in incontinence patient pants, training pants, and the like.
[0025]
【The invention's effect】
In the disposable pants-type wearing article according to the present invention, the body fluid-absorbing core material is in the center in the width direction of the crotch region. Core material And the sides located on both sides Core material And formed in the central part Core material And side Core material Are separated through a pair of slit-like gaps formed near the front waist area and the rear waist area of the wearing article, and are connected between the pair of gaps and the gap. Also side Core material Since a laterally V-shaped notch is formed on the outer edge of the garment, when a worn article to which the absorber is attached is worn, Core material The crotch elastic member provided near the outer edge of the side contracts Core material Is the center Core material Stands on both sides of the wall to form a leak-proof wall without wrinkles and at the center Core material In cooperation with, a recess that swells downward in the crotch region is formed. side Core material Is part of the center Core material Because it is connected to the center Core material The positional relationship with is stable.
[Brief description of the drawings]
FIG. 1 is a partially broken perspective view of a disposable pant-type diaper.
FIG. 2 is a partially broken plan view when the diaper of FIG. 1 is disassembled and extended.
FIG. 3 is a partially broken plan view of a covering portion.
FIG. 4 is a partially cutaway plan view of an absorbing portion.
5 is a diagram showing a cross section taken along the line V-V in FIG. 4;
6 is a view showing a cross section taken along line VI-VI in FIG. 4;
7 is a view showing a section taken along line VII-VII in FIG. 4;
8 is a partial view of a section taken along line VIII-VIII in FIG.
FIG. 9 is a drawing similar to FIG. 1 showing an example of an embodiment.
FIG. 10 is a diagram showing an example of a conventional technique.
[Explanation of symbols]
1 disposable pants-type diapers
2 Covering part
3 Absorber
6 Front waist area
7 Rear waist area
8 Inseam
31 Liquid-permeable sheet (top sheet)
33 Core
36 Central Core material (First Core material )
37 side Core material (Second Core material )
37a front end
37b Rear end portion
37c Middle part
38 Clearance (slit)
39 Clearance (slit)
42 Outer edge
43 Notch
44 Elastic member
46 Crotch elastic member
46a First crotch elastic member
46b Second crotch elastic member
46c 3rd crotch elastic member
70 Liquid Absorption Diffusion Sheet

Claims (4)

A bodily fluid absorption part having a longitudinal and lateral center line, including a front waistline region, a back waistline region, and a crotch region, extending toward the front and back waistline region around the crotch region is formed, and the body fluid absorption In a disposable pants-type wearing article having a length direction in which the portion is directed toward the front and rear waist area and a width direction intersecting the length direction,
The bodily fluid absorption part includes a bodily fluid-absorbing core material having an inner surface located on the skin side of the article wearer and an outer surface on the opposite side, and a liquid-permeable sheet that covers the inner surface and contacts the skin. wherein, the core material is composed of a first core material portion located in said crotch region is positioned in the widthwise center, a pair of second core member positioned on each opposite sides of the first core member, the The second core member has a front end portion, a rear end portion, and an intermediate portion located between the both end portions, and the front and rear end portions are slits that obliquely intersect the outer edge and extend toward the lateral center line. The intermediate portion is separated from the first core material through a gap in the form of a gap, and the intermediate portion is connected to the first core material between the inner end portions of the gap at the front and rear end portions to form a continuous portion. Is formed with a lateral V-shaped notch that expands outward in the width direction,
The bodily fluid absorption part has a first crotch elastic member extending in the lengthwise direction, and the first crotch elastic member is located below an outer edge of the second core member and is notched. A second crotch elastic member extending in the longitudinal direction and extending outward in the width direction, and extending outside the first crotch elastic member in the width direction. A third crotch elastic member positioned in the direction and extending in the lengthwise direction, wherein the second and third crotch elastic members are the rear end portion and the middle of the second core member. A disposable pants-type wearing article, wherein the article is disposed outside the outer edge of the portion.   The disposable pants-type wearing article according to claim 1, wherein the inner and outer surfaces of the core material are covered with a liquid absorption diffusion sheet, and the liquid absorption diffusion sheets covering the inner and outer surfaces in the slit-like gap are in a non-bonded state.   The article further includes a covering portion that is resistant to permeation of body fluid, and the body fluid absorbing portion extends from the crotch region to the front / rear waist region and is disposed in the covering portion. The disposable pants-type wearing article according to claim 1.   The disposable pants-type wearing article according to claim 3, wherein the covering portion is annular.

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